Work-piece holder



Aug. 15, 1961 R, ML. DIETZ wax-mama. mum

2 Sheets-Sheet 1.

Filed March 27, 1959 m m m m ham/P0 M. DIETZ ATTOK'WEX Aug. 15, 1961 R.M. DlE-TZ WORK-PIECE; HOLDER 2 Sheets-Sheet 2 Filed March 27,: 1959INVENTOR. 19/01 4190 /1 D/FTZ United States Patent 2,995,962 WORK-PIECEHOLDER Richard M. Dietz, 200 Springfield Ave., Springfield, DelawareCounty, Pa. Filed Mar. 27, 1959, Ser. No. 802,361 1 Claim. (Cl. 77-62)My invention relates to a work-piece holder of the type used for holdinga work piece while it is drilled, ground or otherwise acted on.

The object of the invention is to produce an improved work-piece holderof the type set forth.

A further object of the invention is to produce a simple work-pieceholder which is very versatile in the sense that it can support avariety of work pieces in a variety of positions and can present thework piece to a variety of tools, at any desired simple, or compoundangle, or, conversely, to produce a tool-holder which can present avariety of movable tools, in a variety of positions to a variety offixed work pieces at the desired simple or compound angles.

The full nature of the invention will be understood from the followingspecification and the accompanying drawings in which:

FIG. 1 is a perspective view of the work-piece holder embodying myinvention and shown in one position thereof.

FIG. 2 is a sectional View showing details looking in the direction ofline 2-2 on FIG. 1.

FIG. 3 is a perspective view of the workpiece holder rotated through anangle of 90, in clockwise direction as viewed in FIG. 1, to show theholder in another position thereof.

FIG. 4 is an exploded, perspective view showing the holder rotatedthrough an angle of 90 from the position of FIG. 2.

FIG. 5 is a perspective view with the device tilted somewhat from theposition of FIG. 1, and showing the use of a sine bar in connection withthe holder.

Before describing the structure illustrated, it is pointed out that,because the work-piece holder embodying the invention can be used inseveral positions, it cannot be accurately described as having a top orbottom or sides. In other words, the surface which constitutes the topside of the device in one position will be its bottom side in anotherposition and vice versa, and the surface which constitutes the frontvertical side of the device in one position, may be the top or bottom,or rear side of the device in another position, and so on. However,because it is necessary to orient the description, reference Will bemade to top and bottom sides, etc., but it is to be noted that suchreference in the specification, and in the claim, must be read on thedevice as it appears in FIG. 1

Generally speaking, the work-piece holder includes twoangularlydisplaced, body portions 19 and 12 which may be of the same, or ofdifferent, surface dimensions and thickness but which are preferably ofthe same height so as to have coplanar upper surfaces 13 and 13a andbottom surfaces 15 and 15a. Body portions and 12 are provided,respectively, with vertically and horizontally spaced, registering, ornon-registering, openings 14 and 16. Openings l4 and 16 are preferablypolygonal so as to be non-rotatably engaged by polygonal fingers 18 and18a, respectively, for supporting and/or clamping a workpiece 22 to bedrilled, planed, ground or otherwise acted on. In Fig. 1, one finger 18is shown which is inserted in one of openings 14.- in body portion 10and which is provided with a set screw 26 for clamping work piece 22against body portion 12 with the upper surface of the work piece flushwith the adjacent upper surfaces 13 and 13a of body portions 10 and 12.If the work piece is shorter 2,995,962 Patented Aug. 15, 1961 ice . 2than the height of the holder, as viewed in FIG. 1 and it is desired tohave the upper surface of the work piece flush with the upper surfaces13 and 13a of the workpiece holder, a finger 18, or suitable supportingblocks, not shown, may be placed below the work piece. Also, two ormore, fingers 18 may be used for clamping a work piece therebetween, orthe work piece may be clamped between a finger 18 engaging a hole 14 anda finger 18a engaging hole 16. Body portions 10 and 12 are provided withextensions 17 and 17a, which are coplanar with top sides 13 and 13a ofsaid body portion, and with bottom extensions 19 and 19a which areco-planar with bottom sides 15 and 15a thereof.

It will be noted that the edges 27 and 27a and 29 and 29a of top andbottom extensions 17, 17a and 19, 19a are parallel to the front faces 28and 28a of the body portions 10 and 12 and that they are normal to thetop and bottom sides thereof. Therefore, when the holder is placed on ahorizontal work bench, or bed plate, it will present a horizontal topside regardless of the surface on which the holder happens to rest andtherefore, a work piece clamped as shown in FIG. 1 will be similarlyoriented. It will also be noted that, while one work piece has beenshown in one position, different work pieces can be clamped in difierentpositions on, or against, either body portion 10 or 12.

As best shown in FIG. 1, the work-piece holder is provided with alaterally and radially adjustable jig which includes an elongated handle34- and a cylindrical member 36 for guiding and positioning a tap, or adrill or the like 38. Handle member 34 is adjustably clamped to theupper surface 13 of body portion 10 by means of shouldered bolt 44 whichengages opening 50 and the head of which is freely movable in a T-slot52 in jig handle 34.

In FIG. 3, the work-piece holder is shown resting on sides 27 and 29which, in FIG. 1, constitute the rear side of body portion 10 of theholder, so as to clamp a work piece in still other positions.

In order to be able to tilt the work-piece holder at any des red angle,I provide the underside of body portion 10 with registering grooves 66,which as shown in FIG. 4, are adapted to receive, and to have suitablyand detachably fastened therein, by suitable means, not shown, a roll70, and I provide the underside of body portion 12 with groove 63 whichis adapted to receive and to have suitably and detachably fastenedtherein, by suitable means, not shown, a roll 72. Roll 70 is adapted tohave tilting block 74 attached thereto, by screws, not shown, passingthrough registering openings 76 and 78. When the work-piece holder is tobe used in the horizontal position of FIG. 1, roll 70 is rotated tobring block 74 to the position of FIG. 3. When it is desired to tilt theworkpiece holder so as to present the Work piece to the tool at adesired simple angle, as shown in FIG. 5, roll 70 is rotated to placeblock 74 at the desired angle. By this arrangement, the work piececarried by the Work-piece holder, will be presented to a tool thereaboveat the desired angle and will therefore be drilled, planed or ground, bya horizontal-1y, or vertically, moving tool, at an angle which iscomplementary to the angle at which block 74 has been tilted.

In machine shop practice a sine bar is commonly used to predetermine theangle at which the work piece is presented to a tool. According to myinvention, the sine bar 80 can be attached to body portion 10 and thework piece can be clamped thereto. When used alone, the sine bar willpresent the work piece to the tool at a simple angle. But, when used incombination with tilting block 74, as shown in FIG. 5, the sine bar willpresent the work piece at a compound angle. Instead of holding the workpiece, the sine bar can serve to hold a 35 tool, the cutting edge ofwhich is to be dressed at the desired angle.

, If desired, rolls 70 and 72 are omitted and are replaced withconventional head and tail stocks of a lathe.

From the foregoing, it will be seen that I have produced an improvedWork-piece holder by means of which a work piece can be clamped in anydesired position without any C-elamps or other fastening devices whichproject beyond the periphery of the casting; that a drilling or tappingjig can be applied to, or removed from, one side of the casting bymerely tightening or loosening screw 44; that, by rotating roll 70,block 74 can be moved to a wholly inefiective position, as in FIG. 3, orto an effective position in which the block is below, and tilts, thecasting; that a sine bar can be clamped to either side of the castingand that it can be used, alone, to present the work piece to the tool ata simple angle, or in combination with tilting block 74, to present thetool at a compound angle.

Instead of being square, as shown, holes 14 and 16 can be of any othershape. They can even be made round and the openings and the fingers canbe provided with inter-engaging keys.

What I claim is:

A workpiece holder including a body portion having openings therein,clamping devices engageable with said A 1 openings for detachablyclamping a work piece to said body portion, a pair of parallelextensions carried by opposite sides of said Work-piece holder anddisposed in planes parallel to the axes of said openings, there beingholes in one of said extensions, clamping means detachably engageablewith said holes to secure a jig to said one extension, there being alongitudinal groove in the other of said extensions, a roller mounted insaid groove, and a block fastened to' said roller, said roller beingrotatable to a first position in which said block is disposed below, andtilts, said body portion, and to a second position in which said blockis disposed alongside said body portion.

References Cited in the file of this patent UNITED STATES PATENTS1,841,196 Mass Jan. 12, 1932 1,954,708 Mass Apr. 10, 1934 2,079,323Kokotiak May 4, 1937 2,351,773 Lovenston June 20, 1944 2,365,436 SaucierDec. 19, 1944 2,619,730 Garter Dec. 29, 1948 FOREIGN PATENTS 1,158,225France Ian. 20, 1958

